I own a 2011 550x. I live in
I own a 2011 550x. I live in the northeast. Since buying the car I have replaced a run-flat tire every 2-4 months. This winter has been the worst. I replaced 4 tires in 18 weeks. I tried 2 different brands to no avail. I asked tire places in my area to replace the runflats with regular tires and they refused stating safety reasons. I can't do it myself. So...I'm done...pissed...mad...frustrated...I traded in the car for an Audi with normal tires. Sucks because I really loved the 550x otherwise. RUN FLATS ARE THE DEVIL!!!! I'll never buy a BMW again after this fiasco.